Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Polyamine with inhibiting and solid-phase cleaning effects as well as preparation method and application thereof

A polyamine-based technology, applied in the preparation of carboxylic acid amide, preparation of organic compounds, chemical instruments and methods, etc., can solve problems such as wellbore instability, high-temperature drilling fluid solid-phase cleaning effect needs to be improved, etc., to ensure well Wall stability, good inhibitor solid-phase cleaning effect, and the effect of ensuring the cleaning of drilling fluid

Pending Publication Date: 2021-10-22
CHINA PETROCHEMICAL CORP +3
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing inhibitors can better solve the problem of wellbore instability in highly active shale formations, the stability of wellbore walls and the solid-phase cleaning effect of high-temperature drilling fluids in high-temperature and high-activity shale formations that are prone to collapse still need to be improved.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polyamine with inhibiting and solid-phase cleaning effects as well as preparation method and application thereof
  • Polyamine with inhibiting and solid-phase cleaning effects as well as preparation method and application thereof
  • Polyamine with inhibiting and solid-phase cleaning effects as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] The present invention also provides a method for preparing the above-mentioned polyamine having both inhibition and solid-phase cleaning functions, comprising: S1) mixing and heating a halogenated epoxide, water and an acidic catalyst to obtain a haloalcohol solution; S2) Mix and heat the haloalcohol solution with polyethylene polyamine to obtain an intermediate product I; S3) mix and heat the intermediate product I with dihalogenated ethane to obtain an intermediate product II; S4) convert the intermediate The product II is mixed with polyethylene polyamine and heated to react to obtain the intermediate product III; S5) adding acetic acid to the intermediate product III, and heating to cause a chain termination reaction to obtain a polyamine having both inhibitory and solid-phase cleaning functions.

[0032] Among them, the present invention has no special limitation on the sources of all raw materials, which can be commercially available.

[0033] Mix and heat the hal...

Embodiment 1

[0043] Add 38g of epichlorohydrin, 60g of water and 4g of concentrated sulfuric acid into the reaction kettle, control the stirring speed at 500r / min, and react at a temperature of 85°C for 0.5h to obtain a chlorohydrin solution; add 70g of four Ethylenepentamine, react at a temperature of 60°C for 1.0h to obtain an intermediate product I; add 40g of dichloroethane to the intermediate product I, and react at a temperature of 80°C for 2.0h to obtain an intermediate product II; add to the intermediate product II 140g of tetraethylenepentamine was reacted at a temperature of 70°C for 2.0h to obtain the intermediate product III; 50g of acetic acid was added to the intermediate product III and reacted at a temperature of 50°C for 0.5h, a chain termination reaction occurred to obtain a reddish-brown viscous transparent Liquid, that is, a polyamine that combines inhibition and solid-phase cleaning. The product yield is 93.42%.

[0044] The polyamine prepared in Example 1 of the pres...

Embodiment 2

[0049] Add 38g of epichlorobutane, 80g of water and 5g of concentrated hydrochloric acid into the reactor, control the stirring speed at 700r / min, and react at a temperature of 90°C for 1.0h to obtain a chlorohydrin solution; add 80g of chlorohydrin to the above chlorohydrin solution Tetraethylenepentamine, react at a temperature of 70°C for 2.0h to obtain an intermediate product I; add 50g of dichloroethane to the intermediate product I, and react at a temperature of 90°C for 3.0h to obtain an intermediate product II; in the intermediate product II Add 160g of tetraethylenepentamine, react at 80°C for 3.0h to obtain intermediate product III; add 60g of acetic acid to intermediate product III, react at 60°C for 1.0h, a chain termination reaction occurs, and a reddish-brown viscous product is obtained Transparent liquid, that is, polyamine with both inhibitory and solid-phase cleaning effects. The product yield is 92.87%.

[0050] The polyamine prepared in Example 2 of the pre...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides polyamine with inhibiting and solid-phase cleaning effects. The polyamine has a structure as shown in a formula (I), wherein m is an integer from 1 to 10, n is an integer from 1 to 5, and R is a C1-C5 alkylene group. Compared with the prior art, the polyamine provided by the invention has relatively good inhibiting and solid phase cleaning effects under a high temperature condition and also has relatively good compatibility in the drilling fluid, and when the polyamine is applied to the drilling fluid, the problem of borehole instability of a strong water-sensitive shale stratum can be effectively solved, the difficulty in slurry making of drilling fluid caused by hydration of drilling cuttings can be effectively avoided, and the stability of the well wall and the cleanness of the drilling fluid are ensured.

Description

technical field [0001] The invention belongs to the technical field of oilfield chemical drilling fluid treatment agents, and in particular relates to a polyamine having both inhibition and solid-phase cleaning functions, a preparation method and application thereof. Background technique [0002] As the scope of oil and gas exploration and development continues to expand, there are more and more deep and ultra-deep wells, high-inclination directional wells, and long-span horizontal wells, and more and more complex formations such as high-temperature and high-activity mud shale, mudstone, and mudstone interbeds are encountered. , the difficulty of wellbore stability is also increasing. Although the existing inhibitors can better solve the problem of wellbore instability in highly active shale formations, the wellbore stabilization effect on high-temperature high-activity shale formations that are prone to collapse and the solid-phase cleaning effect of high-temperature drilli...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C07C233/36C07C231/02C08G73/02C09K8/035C09K8/24
CPCC07C233/36C07C231/02C07C209/08C07C29/106C08G73/024C09K8/035C09K8/24C09K2208/12C07C211/63C07C31/42
Inventor 司西强王中华吕跃滨
Owner CHINA PETROCHEMICAL CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com